The phrase "to accompany the worksheet" means that something is provided or given in addition to the worksheet. It could be a document, a person, or an object that goes along with the worksheet to help explain or enhance its purpose. Full definition
It is a 20 slide interactive presentation with accompanying worksheets for practice. (tes.com)
Please note, all tasks are on accompanying worksheet. (tes.com)
The worked answers accompanying this worksheet allow the teaching and learning to continue beyond the classroom and GCSE students aiming for grades 8 and 9 will find this a very useful resource. (tes.com)